CVE-2026-42843CWE-863

grav-plugin-api: Grav API Privilege Escalation to Super Admin

High · published May 11, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
41.2
In the wild
Unconfirmed
What it is

Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content, media, configuration, users, and system management. Prior to 1.0.0-beta.15, an insecure direct object reference and logic flaw in the Grav API plugin (UsersController::update) allows any authenticated user with basic API access (api.access) to modify their own permission configuration. An attacker can exploit this to escalate their privileges to Super Administrator (admin.super and api.super), leading to full system compromise and potential RCE. This vulnerability is fixed in 1.0.0-beta.15.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00489 · 41.2th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-05-11T15:54Z
EPSS history
Timeline
  • 11 MAY 15:54Z
    grav-plugin-api: Grav API Privilege Escalation to Super Admin
    cvelistv5